The Ozzie Chocolate Company sells its dark chocolate mint munchies packaged in 40 ounce bags. The bagging process has been performing in a stable fashion for some time. The company continues to monitor it to make sure that the bags' weight remains within acceptable limits and that no patterns indicating the process might be experiencing something other than natural variations.
What is the most suitable control chart choice for Ozzie to select in monitoring the bagging process?
a. an x-bar chart, but not an R-chart
b. both an x-bar chart and an R-chart
c. p-chart
d. c-chart
e. both a p-chart and a c-chart